LIFEBREATH 180ERVD-AB 178 CFM @ 0.3 (75) IN. W.G. (PA) 79% (SRE) AT 96 CFM AND 0 DEGREE C (32 DEGREES) DAMPER RECIRCULATING DEFROST CYCLE TOP PORT 5" OVAL DUCT SQUARE ERV CORE ENERGY STAR RATED AUTO BALANCING